Rainbow | FILTER CARTRIDGES | R173266

OPTIMUS # 4900-217 THIS IS A HAYWARD FILTER CARTRIDGE, ALSO USED IN A NUMBER OF MUSKIN FILTERS 50 SQUARE FT CARTRIDGE C-55-O-E IS MOLDED INTO THE TOP OF THE OEM CARTRIDGE DIAMETER: 7" LENGTH 19-5/8" TOP: 3" HOLE WITH MOLDED GASKET BOTTOM: 3" HOLE WITH MOLDED GASKET PLEATS: 118 ON OLDER CARTRIDGES INSTEAD OF A MOLDED GASKET (JUST A RAISED SECTION AROUND HOLE) THERE MAY BE A RUBBER GASKET